Hi

i want to prune a given subset of leaf nodes, given their node ids.

Currently I am doing this in single threaded mode by using a node callback to go to one of the nodes that I want to prune, and then I invoke prune() in the branch callback after checking the node id.

The problem is , this is very slow when I want to prune thousands of leaf nodes.

I can implement this in multi threaded mode using java synchronized data structures, and can call abort() when all the required pruning is complete.

But there is still a problem. What happens if one of the threads invokes abort (), while the other threads are branching some other nodes ?

It would be very useful to have a method in the IloCplex object which prunes a list of leaf nodes, given their node IDs.

In the meantime , how to do this in multi threaded mode ? help will be appreciated.

Thanks!

Edit: I know one way. It is to solve() for a few minutes with the callbacks needed for pruning, and after every 10 minutes check if any more pruning is needed. However, wondering if there is a better way.

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srinivas tamvada
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